Hi I have an oil leak from the valve/rocker cover. I’m going to replace the gasket, but I’m wondering if there are any other gaskets or o-rings that should be replaced at the same time? Only thing that comes to mind is injector seals, but I don’t know if that is necessary. Also, would it be pointless to replace the whole valve cover as well? Since it’s plastic and might be prone to cracking. 
 

Car is a Octavia VRS 2.0 TDI CUPA -2015 with 240k km

Edited 5 February, 20233 yr by Orman

I’ve had a similar issue on a non Skoda and fitted a complete new valve cover. It looked like the cover gasket/rubber seal was leaking but it was actually the cover itself.
I believe on the 2.0 tdi engine there is a breather with a rubber diaphragm inside which can split so might be worth changing the whole thing at high mileage. They aren’t cheap though for a piece of plastic.

Edited 5 February, 20233 yr by classic

56 minutes ago, classic said:

I’ve had a similar issue on a non Skoda and fitted a complete new valve cover. It looked like the cover gasket/rubber seal was leaking but it was actually the cover itself.
I believe on the 2.0 tdi engine there is a breather with a rubber diaphragm inside which can split so might be worth changing the whole thing at high mileage. They aren’t cheap though for a piece of plastic.

Is this rubber diaphragm a part of the valve cover, or is that purchased seperately? 

 

If i go the aftermarket route, a complete valve cover with gasket can be had for around 130 euro, so its not all that bad.

It’s part of it built into the cover, in fact if there’s a problem with the breather you have to get the whole cover.